Water cooler



v Dec; 11,1923. 1,477,319

E, B. CUSHMAN WATER COOLER Filed June 5. 1922 3 Sheets-Sheet 1 I/NVENTOR druid ,5, My mm",

Arrow/Eva Dec. 11-, 1923.

. E. B. CUSHMAN WATER COOLER Filed June 5, 1922 2 Sheets-Sheet 2 MK M,

ATTORNEYS.

Patented Dec. 11, 1923..

umr En star as reen r; err-Mame. ei eaaia e ele t ai a- ME$NEA$$IGNMEN-ES. me-etq ie r c a qamwa werEa-wma Application filed June- 3, 1922.Serialll'm-565,764.

To all whom it may concern: ber 10, which isv mounted upon the engineBeit known that I, EVERETT B. CUsHMAN, frame-8, as showni'n 1, Thissupporta citizenof the' United States, residing at" ing member 10 haswithin; it thev casing. 11

San Jose, in thecounty of SantiaOlara and of a water circulating pump,which may? 5 State of California, have invented certain be of-a nysuitablefor'm; but isihere-shown 001.

new and useful- Improvements in' Water as'a centrifugal pumps-having animpeller Coolers, of which the following is; a specifi-' 12 driven bygears 13 from the-hub off -the cation. fly wheel l; The water is drawninto the My invention relates to water-coolers espump through an inletconnection 14,which 1e peoially adapted for "gasoline engines; and opensinto thecasing lrl in'its centraliregion, particularly to that typeoff-such coolers in and-is dischargedat 15' into theradiato-r, which astationaryradiator is positioned the pe'ripheral'region of saidcasing.being: Withinthespac'ecircumscribedby'an ofi'se'topen directly to'theradiator tubes atl its? riin 'oftheengine flyrwh'ee-landis exposed upperand left hand sides asviewed in 16 to a current "of air'created by therotation" Fig; 2. A partition orbafile plate 16,Fig. of the fiy-wheel. l2, extending from thepump casing 11 to My invention' consistsinthe-novel water-- the outer periphery of the radiatoryoauses coolerwhich 'I 'shall' hereinafter fully :def' the water to pass* through saidradiator; scribe. Its objects and distinguishin gcharin an approrimately circular path untilit" 2o acteristics' willibe b' tterunderstood by an reaches the outlet connecti'( r'i'' 17, thus 76expositionof th'efsanie to follow'the descriptraversing the entireradiator; tion of thejdevioe, in" connection with the The-impeller 12 ofthe circulating pump V accompanying'drawings, i'iivtihichis mountedupon,'or preferably formed in Fig. '1 is a-eentral 'vertidall sectionofmy te'grally with a, spindle -18,'Fig. 1, which 25 water-cooler. isjournaledin'the casing 11. A"thrust=balli'80" F ig.- '2' is; a partsectional front elevation 19, backed by a spring 20, is: mounted in oftheflsame'. the rear endjof"sa;id"spindle 18,- rand-acts Inj'th"drawings, thereference numeral tokeep'fa thrust shoulder of the impeller1 designates'an open-sided'flywheel, which in close-- relation to thefront wall of'the 3 is niounted' npon a}rotaryshaftflextend casing, asshown at 21, to"preventleakage ing homer-ename- 3ofth e engine 'f 'Saidof water through theouterspindle;bearing; fly wheelihas an'ofi' set rim4, and' inclined Lubrication: of said bearing is provided for v spokes5, which act as the bladesof'a; fan" by a tube 22 extending througlithe-radiator to set upa"cu'rrentof-"air tlirou'ghthefiyto'an' accessibleposition*atits rear? wheel-from side to side; From experienoe with" andtestsonth'e-ed Withinj'the 'ofli-set'jpprtion of the rim 4:- vari'ousitypes of fradia'tor's, whmer s ationis aQ's'ta tiona-ry radiator 6,preferably 'subary' 'or-rotary, commonlyusedim'c'onneotiom stantiallyannular "inform. "-Saidiradiator with "a; fly'f'wheeh for circulatingair and?" may be constru'ctedin' any well known manforminga protebtinghousing -for' theZra'di'a- 40 ner, and isfshowni in the drawlngs as'offth'e tor,j' {have found that Ith'eyare" lo-w inefii barrel orcylinder type," havingtransverse oieiicy, due 'to'the' 'aiikhavingtoturn sha p air passages 'Zfthrough whiclr' th e 'air-Pis" angles,either-in entering; or" passing' but, caused. to pass by, the revolvingfan-shaped siate iaau rdrms of whi'cn-I'am aware, the spokes 5 of theily-wheel;and water pa'sfiy""urhe'elis iso constructed as 'to sharply;

45 sages ,8 formed betwluen fthe' wialls of said turnthe airangulai ly're 1e a-' o 1rdfaee'forj air passages?" The-periphery of theradiaradiallyoutwardlythrough its ri'iIiJ tor 6 lies in close proximityto the interior In my invention, however, as hereinbe of the fly wheelrim l, and is preferably vfore set forth, the entire flow of air passesprovided with a ring 9 of felt or other suitthrough both the radiatorand fly wheel 50 able packing material, to prevent any subfrom side toside, while at the same time, stantial amount of air from being drawnthe fly Wheel houses and protects the radia, between the periphery ofthe radiator and tor, said Wheel thus being a fly wheel, a fan, the rimof said fly wheel. a hood for directing the air and a radiator Theradiator 6 ispositioned about'andsupguard all formed in one. y

55 ported by an approximately central mem- Another difiioulty in commonpractise is that of obtaining sufiicient areas for the air to producethe maximum etficiency'in a given space. The construction of the barrelor cylinder type of radiator, either stationary or rotary, is of such anature as to limit itself to certain fiXedair openings unless the sizeof the entire unit be materially increased. For instance, a cylinder orbarrel type radiator must have suflicient areas at the ends of thecylinder to supply air to the entire inside face of the radiator.

This means that where fiy-wheel clearance is limited in diameter, itcannot be used, as the increase in length or width of the wheel afterhaving reached a certain ratio between the end areas and the face areas,will not increase its capacity.

In my invention, either the diameter or width may be altered withoutafi'ecting the other dimension. If the clearance is such that it willpermit the use of only a very narrow unit, the diameter may be increasedand the width decreased without affecting the cooling capacity.

On the other hand, if clearance will not permit of a large'diameter, itmaybe reduced and its length increased without at fecting the cooling.For compact construction, and for obviating fittings and joints, thewater circulating pump is best placed within the radiator. The member 10which forms the support for the radiator also forms the housing for thepump. This member also serves to direct the flow of water evenly throughthe entire radiator. As water enters at 1 1 it is taken into the centerof the pump and is thrown by the pump impeller out into the radiator onthe upper and left hand side of the pump which is open to the radiator.In order to pass out from the radiator at 17 it will travel with evendistribution through the entire radiator around the center member 10..

In many of the uses of gasoline engines, especially for portable work,efliciency is mainly dependent on minimum weight and space. Radiatorcooled engines are,- therefore, desirable. But radiators are fragile,

and in portablework are easilyinjured or ruined. Theyalso require a fanfor cooling and the ordinary fans require chains or belts for driving.These slip or clog when exposed to spray materials in orchard or cropspraying, or to paints in modern machine painting or to concrete orother dust in many kinds of work. The difficulties of mounting andprotecting a radiator have resulted in the protective association of theradiator with the fly-wheel, and the latter by being constructed toserve as a fan, dispenses with the ordinary fan, and its driving belt orchain, and moreover economizes space. This advance in the art has,however, been attendant with the requirement of radiators bothunnecessarily large and expensive, due chiefly to an inadequate supplyof air resulting from drawing the air in and then discharging it fromthe same side of the flywheel, or from one side and out through theperiphery of the wheel. Such course or the air flow results ineXcessivefriction from the sharp changes of direction, and hence reducesvelocity, which in turn requires inp creases in size and cost of theradiatorand fly-wheel- In contrast tothis, my invention, by taking theair from either side of the by-wheel and passing it through the radiatorand discharging it on the opposite side of the wheel, eliminates theexpense of a sepa; rate fan, its mounting, and its driving means, withno extra space consumed for the radiator. Moreover, the radiator isfully protected from injury, without the expense of otherwise protectingor mounting it.

I claim 1 1. A water-cooling means comprising a stationary radiator; arotatable fly-wheel within which the radiator lies; and means carried bythe'fiy-wheel for creating ,2). current of air through both radiator andflywheel from side to side.

2. A water-cooling means, comprising a stationary radiator; and arotatable, opensided fly-wheel within which the radiator lies, saidflywheel having spaced, fans. shaped spokes operating in associationwithone face of the radiator to create a current of air through the radiatorand fly-wheel from side to side. 3. A water-cooling means comprising arotatable, open sided fly-Wheel having an offset rim, and spaced,fan-shaped spokes; and a stationary radiator lying within the spacecircumscribed by the offset rim of the flywheel, withits innerfaceexposed to the op; eration of the tan shaped spokes of the flywheelwhereby a current of airis created through the radiator and fly-wheelfrom side toside. I i I In testimony whereof I have signed my name tothis specification. l p EVERETT B. CUSHMAN.

